Clarks Hill, IN 47983 Frost Dates
When can you plant in Clarks Hill, IN?
Typically, the last spring freeze lands around 04/20, roughly 235 days out. The first fall frost typically arrives around 10/20, about 182 frost-free days later.
The USDA Plant Hardiness Zone Map puts Clarks Hill in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 8 weeks of growing season left in Clarks Hill before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/20 is the middle of 30 years of NOAA records, not a promise. Plant by 04/06 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Clarks Hill compares
Clarks Hill's growing season runs about 182 days, ranking 24,268 of 40,283 US ZIP codes measured here, longest to shortest. Within IN, it ranks 447 of 927.
Learn more
zone vs. frost date covers why Zone 6a and Clarks Hill's frost date answer different questions. the frost range covers how to read the range around Clarks Hill's dates instead of trusting one.